[Dynamics of the joint pains at night in rheumatoid arthritis and arthroses treated with Rengasil and piroxicam].

The effect of a novel nonsteroidal antiinflammatory drug Rengasil on pain at rest in rheumatoid arthritis and arthroses was studied in comparison with piroxicam and placebo. Intensity of nocturnal pains was estimated according to the "visual analogous scale". The relationship between the time of occurrence of a complete analgesic effect and severity of the pain syndrome before the beginning of monotherapy was established.